Direct synthesis process of unsaturated aldehydes from mixtures of alcohols

摘要

Abstract invention patent: "direct synthesis process of unsaturated aldehydes from mixtures of alcohols. The present invention relates to a process for the direct synthesis of acrolein or metacroleu00edna from a mixture of methanol and ethanol or propranolol.The process of the invention comprises two successive phases: oxidation in the presence of a catalyst for oxidation of alcohols by selective light load, after condensation by aldolizau00e7u00e3o of aldehydes formed, when the oxidation in the presence of a catalyst of condensation (aldolizau00e7u00e3o).As a variant, the two phases can be carried out in the presence of a catalyst only, especially in the presence of a selective oxidation catalyst based on molybdenum. These two phases can be carried out in a single reactor or in two reactors in cascade.